Chapter 5 Review

Front

What is the area under the standard normal curve to the left of z=0.88?

Back

0.8106

Tags

CCSS.HSS.ID.A.4

Front

What is the probability that the mean number of gallons of fuel needed to take off for a randomly selected sample of 40 jumbo jets will be less than 3950 gallons?

Back

.0057

Tags

CCSS.HSS.ID.A.4

Front

What is the continuity correction for probability at least 9?

Back

P(X>8.5)

Front

What is the area under the standard normal curve to the right of z=0.46?

Back

0.3228

Tags

CCSS.HSS.ID.A.4

Front

How do you calculate the Z-score?

Back

Z = (x - mean) / standard deviation

Front

If the mean is 21, standard deviation is 1.3, and x = 22, what is the Z-score?

Back

0.77

Front

What does a Z-score represent in statistics?

Back

The number of standard deviations a data point is from the mean.

Front

What is the mean of a normal distribution?

Back

The average value around which the data is distributed.

Tags

CCSS.6.SP.A.3

Front

What is the standard deviation in a normal distribution?

Back

A measure of the amount of variation or dispersion of a set of values.

Front

What is the significance of the area under the normal curve?

Back

It represents the probability of a random variable falling within a particular range.

Tags

CCSS.HSS.ID.A.4